Patents by Inventor Robert Lorquet

Robert Lorquet has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Particles based on polylactones derived from polyhydroxycarboxylic acids, and pulverulent compositions in which these particles are present
    Patent number: 4259203
    Abstract: Particles of polylactones derived from polyhydroxycarboxylic acids. The particles contain a bicarbonate derived from an alkali metal or from ammonium, and are useful in pulverulent compositions for washing, cleaning and bleaching.
    Type: Grant
    Filed: April 20, 1979
    Date of Patent: March 31, 1981
    Assignee: Solvay & Cie.
    Inventor: Robert Lorquet
  • Process for the separation of hydrogen fluoride from its mixtures with 1-chloro-1,1-difluoroethane
    Patent number: 4209470
    Abstract: Process for the separation of hydrogen fluoride from its mixtures with 1-chloro-1,1-difluoroethane, such as those obtained in the manufacture of the latter. An auxiliary solvent, chosen from among 1,1-dichloro-1-fluoroethane, vinylidene chloride, 1,1,1-trichloroethane and mixtures thereof, is added to the mixture so as to obtain two separate liquid phases, one of which contains the hydrogen fluoride and the other of which contains the 1-chloro-1,1-difluoroethane. Virtually all the hydrogen fluoride is recovered in the anhydrous form in the manufacture of monomers such as vinylidene fluoride, from chlorohydrocarbons such as vinylidene chloride and 1,1,1-trichloroethane.
    Type: Grant
    Filed: January 10, 1979
    Date of Patent: June 24, 1980
    Assignee: Solvay & Cie.
    Inventor: Robert Lorquet